Method and apparatus for covering rigid metal articles with fibrous material.



I. H. CAYFREY.

0D ANU APPARATUS FGII COVERING RIGID METAL ARTICLES `A'ITII FIBRoU-S MATERIAL.

MET

APPUCATION FILED JAN. I6, ISI.

nteuted 3km, LS, 1816.

2 SHEETS-SHEET I.

. IIIIIIAILI Y oma 9N I. H. CAFFREY.

IvIETIIGD AND APPARATUS FOR COVEIIING RIGID METAL ARTICLES WITH FIBROUS MATERIAL.

APPLICATION FILED .IAN-16,1915. 1

Patented Jan. I6, ILIIL.

l l I I FEICE. i

asians n. caesaer, or ensues. rains-g. ennnsvnveme, AssiGNon To espasmos rncfsorsn einem. consensos' site VER FALLS, PENNSYLVANIA, .A COBPGBIA` METHQ .ABATUS FR CGVERNG Eli-EE METAL ARTICLES WITH FIvBOUS EEEEIL.

Specification of Letters Eatent.

Patented J a11.18, 1916.

To 1235710710772 'it may concern i Be it lrnoivn that l, JAMES H. Carrear, a citizen of the United States, residing in Beaver Falls, in the county of Beaver and State of lennsylvania, have invented an improvement in Methods and apparatus for Covering Rigid Metal Articles with lihrous Material, of which the following despription, in connection With the accompanying drawings, is a specification, like characters on the drawings representing lilre parts.

This invention relates to a novel method of and apparatus for providing rigid metal' articles with a protective covering of fibrous material which is adhesively secured thereto, and more particularly metal articles which are provided ivitli a covering of asbestos or other paper, vvhicli is secured to tlie metal article by asphalt or like bituminous cement.

ln the present instance, the metal article is shown as a bar, which may be i' or otherivise shaped in cross section, and which is covered o v a layer of asbestos paper secured thereto by asphalt cement, and which is especially adapted among other uses, to be employed in the manufacture of skylights for mills, factories and other buildings.

ln accordance with this invention, the metal article, which for convenience may he referred to as the'inetal bar, is cleansed by dipping it into an acid bath, and then the cleansed bar is placed into a bath of hot or liquid asphalt, in which the bar is allowed to remain until it has been heated to approximately the temperature of the asphalt. The liar is then removed from the bath and the surplus asphalt is removed so as to obtain a coating of asphalt of uniform thiol;- ness. 'lhe removal of the surplus asphalt may be accomplished hy passing the bai* through a slot or opening in the side of the kettle containing the asphalt. The coated bar is then placed on a layer or sheet of asbestos paper or other fibrous covering material, which has been previously placed in position in thev apparatus 'herein shown, ivhich is employed to firmly press the har to the paper and the paper to the har as will be descrihed. These and other features of this invention will be pointed out inthe claims at the end of this speciication.\

Figure l is a plan View of an apparatus each other and rest upon a table or platform .for pressing the covering to the metal bar. Fig. 2, a side elevation of the apparatus shown in Fig. l. F ig. 3, a cross section of the apparatus shown in F i l, and Figs. 4 to 9 inclusive diagramma'tiviews to illustrate the various steps employed in folding and pressing the covering layer to the coated metal har. Referring to the drawings and more par. ticularly to Figs. 4 to 9 inclusive, a represents a sheet, strip or layer ofgasbestos paper or other fibrous material, and a metal bar `which has been coated with a layer of asphalt or other adhesive material, which is not indicated, but which is applied to the bar Z1 by lirst cleansing the same by dipping in an acid bath, and then immersing the bar in a hath of melted asphalt, in which the har is left until the bar has been heated to substantially the temperature of thek asphalt hath, and when thus heated, the bar is removed trom the asphalt bath and passed through a suitable opening in a side Wall of the lrettle containing the asphalt, so that thevsurplus asphalt is removed and a layer of asphalt of uniform thickness is left ou the metal loar. The metal bar b coated With asphalt is laid upon the paper. sheet or layer` a, which has been placed upon two parallel metal oars c, d, which are separated from each other and rest upon two parallel metal bars' e, f, which latter are separated from g, which is supported at its ends by upright frames l0, see Fig. 3, which latter also support cross bars l2, extended beneath the tahle or platform g transversely thereof.

rlhe metal bars e, f, are separated from each other for the reception between themV of a portion of the paper sheet a and the head of the har Z3 as represented in Fimo.

The Weight of the bar b is suliicient to force the paper sheet into the space 13 between the metal bars e, shown in F ig.- el. lllhen the paper sheet and coated bar b have heen placed in the space 13 and in substantially the position shown in Fig. 5, the

paper sheet o rests upon the platform 011.1100

table g and any air which may be between. the pape); and the head 14 of the coated bar is expelled therefrom bypressure upon the web 15 of the barb, which pressure may he l oted atoneend tol abracket or arm 17, .at-

' tached to the table by rivets 18 or otherwise.

The lever 16 is moved yfrom the position shown by full lines in Fig. 3 into the position represented by dotted lines,V and is eX- tended transversely of the coated barb, and when engaged withweb 15 of the coated bar, the operator pressesdown on the lever 16 and forces the head 14 of the ycoated bar down into irm contact with the paper sheet a and thusexpels the air whichmay be between the sheet and head of the bar. The presser lever 16 -is then moved back into` its 'full line position, and the side bar e, which is movable on the table g, is moved transversely of the table, so as to force the head of the'coated-'bar againstn the side bar f, which is stationary on the table, it being attached thereto in any suitable manner. The sid'e bar may be moved, as herein shown, .by the yoperator moving a lever or arm 2O toward vthe table and into a substantially vertical position. The lever or arm 20 is attached to a rock shaft 21 supported. by the cross bars I2 of the `framework of the apparatus, and said rock shaft 'is operatively connected withthe sliding side bar e, which is effected as herein shown by connecting a' bracket 22 on the side bar e with a crank 23 on .the rock shaft 21 by means of a linkerrod 24. When the lever 20 is moved as described, the paper sheet a is firmly pressed against the side edges of the head14 of the coated bar b as represented in Fig.,5, and

l thefree side portions 25, 26, of thepaper sheet a., which are on opposite sides of the coated bar b, are caused to assume an upright position as represented vnFig. 5. The operator then moves thejbars c, d, towardl each other, so as to cause said bars-to fold the free sidey portions 25, 26, of the paperv sheet over upon the upper surfaces of the headA of the coated bar and into substantially the i position representedv in Fig. '6, The iffolding'bars c, d, may be operated as herein shown by levers 30, 31, attached to rock shafts 32, 33, located on opposite sides of the table and-provided with cranks 34, 35, which.' are connectedby links or rods 36, 37, with brackets or arms 38, 39, attached to the folding bars c, d. l The parts are now .in the position indicated ,in Fig.r 6, and the Voperator then takes 5l a metal bar 40, which is unattached and can be handled, and which is represented in Fig. 7, and wipes the remaining free portions Vof the side 25 of the paper sheet, over the web of the bar b, and against vthev free portion ofthe side 2&6 of the -paper sheet, thereby 1bringing the side 26 of the paper sheet into contact with one side ofthe web, and the other side 25 of the paper `sheet into, contact with the other side of the web, the.u top ed'ge thereof and with the opposite side of the web, where it overlaps' the side 26 of" the papervsheet,v vThe paper sheet a is initially arranged -on the machine, so that one side as.25 is materially longer than the other side 26', and so that the latter, when folded over the head 14 and against the Web 15 of the coatedrbar, will leave the upper portion of the web exposed, so that the side 25 may contact therewith. The folding side l bars'c, d, are then backed off or moved away from the web of the coated bar by moving the levers 30, 31, backward, and when the folding bars are backed 0H or opened sufiiciently, presser bars 42,430, are placed between the said folding bars and the paper covered web of the bar b, and the levers 3,0, 31, are then moved forward or toward each other to force the pressure bars 430, 42

against the sides of the web, as represented.

in Fig. 8,' so asto firmly Apress, the paper against the opposite sides of the web of the coated bar b. Pressure is also applied vto the paper covering the upper edge of the u the upper edge of v the -web and to bear against the paper covering said-upper edge,

which portion ofthe paper is pressed against the upper edge of the web by the weight of the bar 43. Aterthe side presser bars 430, 42, 'have been placed.in posit-ion as descrlbed, the upper ends of the presserbars gether at v47.and which aref forced into engagement wlthth presser `bars 42, 40, by

5430-, 42,1 1re then engaged by a clamp consistv ving of laws 45, 46, which. are pivoted toa hand whee1'48 working on ascrew.thread-,Q l c ed rod 49 in a l manner well understood.. The paper covered bar is then remov ad from 'the machine, and the-ends of the coated'bar may-andv preferably will be. protected yby folding over'jby yhand thepcrtion's of the lpaper sheet which project beyond the ends, of the coated metal bar, with the result that the "metal bar is not only protected on' all surfaces by the coatin other adhesive-material by the asbestos or layer.

In the presentinstance-the metal bar to but is also protected other covering sheet or layer 'of asphaltorv be covered is shown as' -Tshaped in cross;

section, butit is not' desired to limit the invention in this respect, as, thel said metal liar may be of other shapes in cross sect-ion, such as L-shaped, U-shaped or it may be -a flat bar, and when it is desired to cover these different shaped blfrs, thev machine herein shown is lused for them all up to the point where the free v sides of .the paper sheet are folded over upon the han When iso this point is reached, the auxiliary bar or bars which are used for pressing the free end portions ofthe papersheet, are made of the Aproper or desired shape to work upon the particular shape of the coated bat. To illustrate, if the bar b is L-shaped, only one of the folding bars e, (l, is used, whereas if the bar is U-shaped, both of the folding bars are employed as clamps for the two presser bars 430, 42, shown in Fig. S, which are applied to thel outer side of the sidewalls of the channel or U-shaped bar, and the free side portions of the paper sheet are folded within the channel bar to engage the inner surfaces of the side walls and bottom thereof. In'the case of a flat coated bar, the folding bars c, d', will effect the folding of the free end portions of the paper sheet, and the pressure applied by means of the lever 16 vacting on a tool or bar (not shown) which is applied by hand to the paper covering of the upper surface of the flat coatedu bar.

l `urthermore a machine provided with movable presser jzlws and embodying the principle of the machine may be used for covering hollow objects with the protective layer or sheet.

I have herein shown one construction of machine which may be. preferred, but it is not desired to limit the invention to the particular construction shown.

Claims:

l. The method of vproviding rigid metal articles with a protective covering of fibrous 'materiah which consists in immersing the rigid metal article in a bathof adhesive ma.- terial, placing the article thus coated upon a layer of fibrous material, applying p'ressure to the metal article to firmly press the metal article upon a portion of the fibrous layer. folding the fibrous layer over upon the metal article kto envelop the latter with the fibrous layer. and applying pressure to the folded over portions of the fibrous layer to firmly press such portions to the metal article.

The method of providing rigid metal articles with a protective covering of fibrous material. which consists in coating the. rigid article with an adhesive material7 placing the coated article upon a layer of fibrous material, folding the free side portionsof the brous layer over upon the rigid article, and pressing the fibrous layer into firm contact with the. rigid article.

3. 1n ay machine of the character de scribed, in combination, a table, presser bars supported byand spaced apart on said table, one of said presser bars being movable toward the other, folding bars located above and movable ,on said presser bars, a rockshaft to which said movable presser bar is connected, rock shafts to which said folding bars are connected, and means for rocking said shafts.

4. In a machine of the character described, in combination, a table to support a covering layer and the coated bar to be covered, presser bars supported by and `spaced apart o'n said table, means to move one of said presser bars toward the other to press the covering onto the sides of the coated bar, folding bars located above the presser bars and movable in a plane parallel with said presser bars and beyond the latter and over the portion of the coated bar between the presser bars to fold the covering layer over upon the upper surface of said portion, and means to move said folding bars.

In a machine of the character oescribed. in combination. a table to support a Covering layer and a coated metal bar to be covered by said layer, presser devices spaced apart on said tabl@ and one of which is movable toward the other` and a. lever pivoted tol be moved transversely of said table to engage the coated bar and force it and the co'vering layer down on'said table, substantially as described.

6.'In a machine of' the character described, in combination, a table to support a covering layer and a coated metal bar to be covered by said layer, presser devices Aspaced apart` on said table and one of which is mo 'able toward the other. a lever pivoted to be moved transversely of said table to engage the coated bar and force. it and the. .covering layer down on said table, and folding devices movable on'saidprcsser devices and toward each other. substantially as de scribed. v p v l 7. ln a. machine of the character described, in combination,` a table. presser devices spaced aparton said table and one ofwhich is movable toward the other, folding devices located above said presser devices and one of which is movable toward the other and bevond one of raid presser devices in a plane parallel with the latter, substantially as desevi'ibed.

8. In a machine of the character described. in combination, a table, presser bars mounted on said table and spaced apart. one of the said devices being stationary and the other movable` and devices movable on and bevond the presser devices in a plane parallel therewith and toward each other, sub- Vstantiallv as described.

In testimony whereof. 1 have signed my name to this specification in the presence of two subscribing witnesses.

JAMES H. CAFFREY. iilitnesses:

H. F. Hawnnvs, Josnrir Mrsnmtn; 

